FF5 U4 L1,2

What wears a cap but has no head?

What is the smallest room in the world?

something that makes water, air and land dirty

Which is faster, hot or cold?

the world around us

What starts with a ''t'', ends with a ''t'' and is full of ''t''?

a place for people to leave rubbish

What appears once in every minute, twice in every moment, but not once in a thousand years?

to make a place clean and without litter and pollution

a very large, round rock in space that goes around the sun, for example Earth or Mars.

to hurt something or do something bad to it

the animals and birds living in a place

paper and other rubbish on the ground